WTB : Discrete opamps - 990c Red Dot Blue Dot

[john12ax7]

Am looking to buy some pre-fabbed discrete opamps,

Hardy 990c
SL 2520 Red Dot
SL 2520 Blue Dot

Perhaps others

Edit: I'm mostly looking for non-diy opamps, something I could buy a bunch of in the future and not have to deal with the soldering.